Time-switch.



A. w. LINDELL.

TIME SWITCH.

APPLICATION FILED DEC. 17, 1913- 1,142,338. Patented June 8, 1915.

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THO., WASHINGTON, D c.

THE NORRIS PETERS 60.. rnu|O-L| UNITED STATES PATENT OFFICE.

ARNOLD W. LINDELL, 01 DENVER, COLORADO.

TIME-SWITCH.

Application filed December 17, 1913.

To all 107mm it may concern Be it known that I, ARNOLD W. LINDELL, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Time-Switches, of which the following is a specification.

This invention relates to electric time switches and its object resides in the provision of a circuit controlling device of this character in which great simplicity of construction is combined with practicability in use.

In the accompanying drawings in the various views of which like parts are similarly designated, Figure 1 is a vertical section through the casing in which my improved switch mechanism is inclosed. Fig. 2, a section taken along the line -22, Fig. 1, Fig. 8, a horizontal section along the line 33, Fig. 1, Figs. 4 and 5, fragmentary plan views of the circuit controlling element of the invention in the two positions it successivel assumes when actuated by the engagement of the time controlled operating wheel, Fig. 6, an enlarged section taken through the rim of the operating wheel at a point at which one of the adjustable cogs is secured thereto, Fig. 7, a vertical fragmentary section showing the arrangement of the parts in a switch adapted for the control of more than one circuit, Fig. 8, a section along the line 8-8, Fi 7, and Fig. 9, an enlarged section taken along the line 99, Fig. 3.

Referring to the drawings, the reference numeral 2 designates the switch housing, the lower portion of which is occupied by a base 3 of nonconductive material. Mounted upon this base is the circuit controlling element 4 which consists of two oscillating members 5 and 6 connected by a normally straight spring rod 7.

The member 5 which may be termed the contact member of the element, is the terminal of an electric circuit in which the switch is connected and when adjusted to its circuit-closing position as shown in Fig. 5, it engages the other terminal of the circuit which consists of a contact 8 secured upon the base 8.

The contact member is pivotally mounted on the base at a point designated by the numeral 9, and to frictionally maintain it in its adjusted positions, a button 10 is provided which is supported upon a coiled spring 12 disposed in a socket 13 formed in Specification of Letters Patent.

Patented June 8, 1915.

Serial N0. 807,286.

the base, and the rounded upper end of which normally extends above the upper surface of the base into one of a pair of correspondingly formed indentations 14 in the lower surface of the contact member.

The other member 6 of the circuit-controlling element, which is composed of nonconductive material, is pivoted on the base at 15 and serves to transmit the movement of the time-controlled operating wheel of the switch, to the contact member 5. It has two oppositely disposed cam-projections 16 and 17 adapted to be engaged by the cogs on the operating wheel for the purpose of reversing the position of the memberas will hereinafter be more fully described.

The spring 7 which connects the two members of the circuit-controlling element is connected to an upwardly projecting lug on the transmission member and extends loosely through a slot in a similar lug on the contact member. I

The above described element operates on the principle of a so-called snap-switch, the spring serving to actuate the contact mem ber only after the transmission member has been turned through the greater part of its arcuate movement in either direction as i1- lustrated in Figs. 4 and 5 which show the positions of the parts prior and subsequent to the completion of the movement of the transmission member after it has been actuated by the engagement of one of the cogs on the operating wheel, to close the circuit.

Two spring-controlled, headed push-bars 18 which project through openings in a side of the casing 2, are disposed with relation to the transmission member, to reverse the position thereof by engagement with one or the other of its projections when it is desired to open or close the circuit by hand independent of the time-controlled mechanism.

The operating wheel hereinbefore repeatedly referred to, consists of a spider-shaped web 19 having a central opening for its support on the rotary arbor 20 on which it is mounted, and provided with two concentric annular rails 21 which are formed at opposite sides of its rim. Cogs 22 which project outwardly from the wheel for wiping engagement with the projections on the member 6 of the circuit-controlling element, are composed of threaded pins 23 screwed into registering openings of two blocks 24 which are provided with grooves to receive the opposite edges of either of the two rails for the purpose of securing the pins in place thereon at any desired point.

The wheel is operatively connected with a clock mechanism 25 preferably of the eight-day type, which is constructed to impart to the wheel one revolution in every twenty-four hours, and the outer surfaces of the rails 21 have been divided into twenty-tour parts by equidistant graduations designated by the numerals 1 to 12 to indicate the points at which the cogs must be placed to actuate the circuit-controlling element at the desired hours of the day.

The portions of the graduated surfaces of the rails at which the cogs are placed to open or close the circuit at an hour between midnight and neon have in the drawings been distinguished from the portions at which the cogs are secured to control the position of the circuit-controlling element during the other half of the day, by shading.

Having thus d scribed the mechanical construction of my time switch, it will be understood that a cog mounted on one of the two rails of the wheel serves to move the contact member 5 from its position in which it opens the circuit, to the circuit-closing position shown in Fig. 5, by engagement with the projection 16, while that on the other rail is provided to return the parts of the circuit-closing element to their normal position in which the circuit is open, as shown in Fig. 3, by engagement with the other projection 17.

hen it is desired to control two circuits by the same time-controlled mechanism, two circuit-controlling elements of similar construction are mounted at opposite sides of the base as shown in Figs. 7 and 8.

The cog which in the above described construction operates to close the circuit through the instrumentality of the circuitclosing element, is extended as shown at 26, to simultaneously engage the projections 16 of the members 6 of the two elements whereby to close both the circuits.

The cogs which serve to reopen the circuits are made of different lengths as shown at 28 and 29, to respectively engage the projections 17 ot' the members 6 of the two circuit-controlling elements for their separate adjustment to their original positions, the cog 28 which engages the member of the element on the upper surface of the base being made of the usual length, while that provided to actuate the member of the lower element is made longer and formed with a Copies of this patent may be obtained for five bent as shown at 30 in Fig. 8, to enable it to pass the corresponding member on the upper element without coming in contact with the same.

It will be understood that if so desired, cogs constructed similar to the cogs 28 and 29 may be applied to'close the circuits at different hours of the day and that by the orovision of two or more cogs on one or both the rails of the wheels, one or more circuits may be opened and closed alternately more than once during each twentyfour hours.

Other modifications of the construction, form and arrangement of tie parts of my improved time-switch as shown in the drawings may be resorted to within the spirit of my invention as defined in the following claims.

I claim 1. In a time switch, a time-controlled rotary wheel having at different points of its periphery, cogs of different forms, arranged in sets, and a plurality of circuit-controlling devices adapted to be operated by the engagement of the cogs during rotation of the wheel, to alternately open and close the circuits in which they are connected, the said devices being positioned with relation to the wheel so that each device will be acted upon by dili'erent set of cogs, independent of the others.

2. In a time switch, a time-controlled rotary wheel comprising a hub, two coaxial circular rails fixed thereon and spaced laterally from each other, and cogs having means for their adjustable connection with either one of said rails and an element disposed to be shifted by engagement with said cogs alternately from a point in the path of a cog on one of said rails to a point in the path of a cog on the other rail.

3. In a time-switch, a time-controlled rotary wheel comprising a hub, and coaxial, circular rails fixed thereon and spaced laterally trom each other, cogs attached to said rails, whereby to move in diil'erent paths during rotation of the wheel, and an element disposed to be-shifted by engagement with said cogs alternately from a point in the path of a cog on one of said rails to a point in the path of a cog on the other rail.

In testimony whereof I have affixed my signature in presence of two witnesses.

ARNOLD W. LINDELL.

Witnesses:

G. J. RoLLANDn'r, L. Rnoanns.

cents each, by addressing the "Sommissioner of Patents,

Washington, D. 0. 

